Temperature and , rotation speed regulators works good. The item "VWR Gyratherm IIa hotplate hot plate stirrer mixer mix heater hot plate" is in sale since Monday, February 6, 2012. This item is in the category "Business & Industrial\Healthcare, Lab & Dental\Medical & Lab Equipment, Devices\Lab Mixers, Shakers & Stirrers\Magnetic Stirrers & Hotplate Stirrers"." and is located in Derwood, Maryland. This item can be shipped to United States.